Today's Message Index:
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1. 12:53 AM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
2. 11:30 AM - Re: the Obsidian Files - So Much Noise!!! (n7188u)
3. 12:02 PM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
4. 12:36 PM - Re: the Obsidian Files - So Much Noise!!! (n7188u)
5. 04:04 PM - Re: Best practices, Autopilot install MOD 75 & MOD 76 (h&jeuropa)
6. 05:52 PM - Re: the Obsidian Files - So Much Noise!!! (Area-51)
Message 1
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
For treating firewall areas i would not use the butyl matting product... there
is a much lighter product in the DCI line that is a dacron weave with 3M adhesive
and foil shielding; it's primarily a medium level heat shield and acoustic
isolator for OEM automotive under roof paneling; weighs almost nothing and is
perfect for the firewall and upper engine cowl lid... it can be purchased direct
in 1000x1000 size sheets.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510451#510451
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
I used the Noico material since I already had it (purchased a while back but never
used due to the weight). and is installed. Unfortunately we have a few days
of bad weather and wind coming so may not be able to test but will try just
before sunset today if the wind dies down a little.
Regarding the material to use on the firewall, flammability of the material needs
to be considered. I did a vertical flame test on the material I used in the
airbox and the flame did not propagate. After the starting flame is removed it
will burn for a short time but not support it (quits). I don't think it is any
worse than the resin the airbox is made of but not 100% sure of course. And
even wonder if it was the adhesive that was burning. But if there is a fuel or
oil fire in the engine compartment this stuff will certainly not help. And the
fumes may be another problem. So I would not consider this material unless
more info on this becomes available.
I will do a more aggressive test later this weekend using a torch. Want to make
sure the material will not support s flame a I saw earlier today.
Here are some pictures of the install. Looking forward to testing :)
Best,
Chris
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http://forums.matronics.com/viewtopic.php?p=510456#510456
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Nice job; you don't muck around!
Your airbox is slightly different and looks like your engine is possibly set forward??
Technical data on the butyl is provided on the DCI website in support pdf document;
or via emailing them. Be mindful though it is shielded by the foil so this
prevents air supporting flammability, but at the right temperature butyl will
liquify into a tar type goo. If the situation is getting that hot you will likely
be having bigger issues to worry about than the butyl igniting.
Looking forward to hearing the results...
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510457#510457
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
A51,
I didn't muck around on this one because I am so desperate to see if this work
and make my airplane quieter that this morning I woke up before the sun came up
and couldn't sleep anymore so went to the hangar and got to work :)
Regarding the different airbox, my kit was a mix of bits and pieces scattered all
over the country (and world). The airbox was missing but a kind soul in England
send me an old one which is what you see here. However, when I tried to install
it the thing's size was so off that the top cowling would not fit by a
lot! I had to Frankenstein the airbox and chop about an inch of the top and glass
it all up again. So yes, it is certainly custom.
Chris
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http://forums.matronics.com/viewtopic.php?p=510459#510459
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| Subject: | Re: Best practices, Autopilot install MOD 75 & MOD 76 |
Christoph,
On the Europa Club website under Bud Yerly Notes, there is a document called Pitch
Autopilot Options which gives several suggestions.
About your glider question, we found the mono wheel flap pushrod interfered with
the glider spar after the spar was enlarged with the mandatory mod. Our solution
was to replace the rod with a push pull cable. We have not completed our
glider wings so no idea about interference with the airbrake mechanism.
Jim
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http://forums.matronics.com/viewtopic.php?p=510460#510460
Message 6
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| Subject: | Re: the Obsidian Files - So Much Noise!!! |
Ahhh, that makes sense.. yes, i fitted some buffer pads under mine and had to remove
them back to none because the top cowl was standing up too proud after...
Today i flew again for 75min and noticed that since installing this mod i am no
longer feeling fatigued after i shutdown and exit the cockpit... prior after
about 45min flight time i would start thinking about wanting to land and rest..
last three flights i have not had any thought about landing to rest... feeling
a lot more connected to the aircraft now.
Rolled out on 23 as usual, popped the flaps and undercarriage away and rotated
at 90kt into a steep climb at 5000rpm holding at 72kt; watched the dial hit 1000'
in a blink, then cruised around at 75kt again... figured, hey i got nowhere
to actually go, why burn all that fuel and load everything up?! Did a few more
steep climbs up to 2500' then 4000', flew the inbound leg on 72kt simulated
engine failure, made the circuit entry at 1000' on a 600fpm decent
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=510461#510461
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